Child seat

ABSTRACT

A child seat includes a seat portion, a backrest frame and a front guard respectively connected pivotally with the seat portion, a latch connected with the seat portion, and a linking part respectively coupled to the latch and the backrest frame, wherein the latch is operable to lock the front guard in position, the latch being engaged with the front guard for locking the front guard and disengaged from the front guard for unlocking the front guard, and the backrest frame being rotatable to cause the latch to unlock for rotation of the front guard.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application claims priority to China patent application no.201810360100.3 filed on Apr. 20, 2018.

BACKGROUND 1. Field of the Invention

The present invention relates to child seats.

2. Description of the Related Art

Various juvenile products are available on the market for facilitatingcare and transport of young children. For example, a child stroller maybe typically used to transport a child outdoor. The child strollergenerally has a seat portion, a backrest and a front guard. During use,the front guard can be erected to forwardly restrain a child sitting onthe child stroller. When the child stroller is unused, the front guardand the backrest may be folded to reduce the size of the child strollerfor convenient storage. Because the front guard and the backrest areseparate elements, multiple operating steps are usually required forfolding the front guard and the backrest, e.g., first unlocking andfolding the front guard, and then unlocking and folding the backrest.This may undesirably complicate the folding of the child stroller.

Therefore, there is a need for an improved design that is moreconvenient to operate, and can address at least the foregoing issues.

SUMMARY

The present application describes a child seat that is convenient tofold for storage. In one embodiment, the child seat includes a seatportion, a backrest frame and a front guard respectively connectedpivotally with the seat portion, a latch connected with the seatportion, and a linking part respectively coupled to the latch and thebackrest frame, wherein the latch is operable to lock the front guard inposition, the latch being engaged with the front guard for locking thefront guard and disengaged from the front guard for unlocking the frontguard, and the backrest frame being rotatable to cause the latch tounlock for rotation of the front guard.

According to another embodiment, a child seat described herein includesa seat portion, a backrest frame and a front guard respectivelyconnected pivotally with the seat portion, a latch connected with theseat portion, and a linking part. The latch is operable to lock one ofthe backrest frame and the front guard in position, and the linking partis respectively coupled to the latch and the other one of the backrestframe and the front guard, the other one of the backrest frame and thefront guard being rotatable to cause the latch to unlock.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view illustrating an embodiment of a child seat;

FIG. 2 is a cross-sectional view of the child seat shown in FIG. 1 takenalong a vertical section plane;

FIG. 3 is a cross-sectional view illustrating the child seat with abackrest frame disposed in another deployed position different from thatshown in FIG. 2;

FIGS. 4a and 4b are two cross-sectional views illustrating exemplaryoperation for folding the backrest frame and a front guard of the childseat; and

FIG. 5 is a cross-sectional view of the child seat taken along anothervertical section plane different from that of FIG. 2.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Reference is made to FIGS. 1-5 to describe an embodiment of a child seat100. Referring to FIGS. 1-5, the child seat 100 can include a seatportion 10, a front guard 20, a backrest frame 30 and a foldingmechanism 40.

The front guard 20 can include a transversal portion 24, and two sideend portions 26 respectively connected with the transversal portion 24at a left and a right side thereof. The front guard 20 is pivotallyconnected with the seat portion 10 about a pivot axis L1 that generallyextends transversally from a left side to a right side of the seatportion 10. The front guard 20 can thereby rotate about the pivot axisL1 relative to the seat portion 10 between multiple angular positions,which can include a folded position as shown in FIG. 4b and an unfoldedposition for use as shown in FIGS. 2 and 3. According to an example ofconstruction, the seat portion 10 can have two sidewalls 11 respectivelyprovided at the left and right sides, and the front guard 20 can bedisposed so as to transversally extend above the seat portion 10 withthe two side end portions 26 of the front guard 20 respectivelyconnected pivotally with two sidewalls 11 about the pivot axis L1. Thefront guard 20 can be folded toward a front of the seat portion 10 inthe folded position with the transversal portion 24 of the front guard20 lying adjacent to the front of the seat portion 10. In the unfoldedposition, the transversal portion 24 of the front guard 20 can bepositioned farther above the seat portion 10 so as to define a closedopening for placement of the child's legs between the seat portion 10and the front guard 20.

The backrest frame 30 can include a transversal portion and two side endportions 36 respectively connected with the transversal portion at aleft and a right side thereof. The backrest frame 30 is pivotallyconnected with the seat portion 10 about a pivot axis L2, and can rotateabout the pivot axis L2 relative to the seat portion 10 for adjustmentbetween multiple angular positions. According to an example ofconstruction, the backrest frame 30 is disposed so as to transversallyextend above the seat portion 10 with the two side end portions 36 ofthe backrest frame 30 respectively connected pivotally with the twosidewalls 11 of the seat portion 10 about the pivot axis L2. The pivotaxis L2 extends transversally from the left side to the right side ofthe seat portion 10 parallel to the pivot axis L1, and is disposedbehind the pivot axis L1 adjacent to a rear of the seat portion 10.

According to an embodiment, the backrest frame 30 is adjustable relativeto the seat portion 10 between multiple angular positions including acollapsed position and one or more deployed position for use. FIG. 4billustrates the collapsed position in which the backrest frame 30 can befolded toward the front of the seat portion 10. FIGS. 2 and 3 illustratetwo exemplary deployed positions for use where the backrest frame 30 ispositioned at two different angles relative to the seat portion 10. Afirst deployed position of the backrest frame 30 may correspond to areclining position as shown in FIG. 3, and a second deployed position ofthe backrest frame 30 may correspond to an upright position between thefirst deployed position and the collapsed position as shown in FIG. 2. Abackrest adjustment mechanism 60 may be provided to lock the backrestframe 30 in any one of the deployed positions.

Referring to FIG. 1, the two sidewalls 11 of the seat portion 10 canrespectively have two connectors 50 operable to detachably engage withtwo corresponding structures provided on a standing frame of a childsupporting apparatus (not shown). Examples of child supportingapparatuses that can receive the installation of the child seat 100 caninclude, without limitation, child strollers, highchairs, and the like.The child seat 100 can be thereby installed and removed as desired onthe standing frame of a child supporting apparatus.

Referring to FIGS. 2-5, the folding mechanism 40 can include a latch 41,a linking part 42 and a spring 43. The latch 41 and the linking part 42can be movably assembled with the seat portion 10. According to anembodiment, the latch 41, the linking part 42 and the spring 43 may bedisposed and concealed inside one of the two sidewalls 11. The foldingmechanism 40 can be thereby protected against undesirable damages oraccidental actuation by a child sitting on the seat portion 10, and theouter appearance of the child seat 100 would not be affected.

The latch 41 is operable to lock and unlock the front guard 20 withrespect to the seat portion 10. More specifically, the front guard 20 islocked in position relative to the seat portion 10 when the latch 41 isengaged with the front guard 20, and is unlocked for adjustment relativeto the seat portion 10 when the latch 41 is disengaged from the frontguard 20. For example, the latch 41 can engage with the front guard 20for locking the front guard 20 in the unfolded position shown in FIGS. 2and 3, and can disengage from the front guard 20 for adjustment of thefront guard 20 between the unfolded position and the folded positionshown in FIG. 4b . According to an example of construction, the latch 41can be pivotally connected with the sidewall 11 of the seat portion 10about a pivot axis L3, and can have a protrusion 411 that can engagewith and disengage from a notch 21 provided on a peripheral edge 22 ofthe side end portion 26 of the front guard 20. The pivot axis L3 canextend transversally from the left side to the right side of the seatportion 10 parallel to the pivot axis L1, and the protrusion 411 can beprovided at an offset location from the pivot axis L3. The protrusion411 of the latch 41 can engage with the notch 21 of the side end portion26 for locking the front guard 20 in position, and disengage from thenotch 21 for unlocking the front guard 20.

It will be appreciated that the locking engagement between the latch 41and the front guard 20 may also be achieved with a variant constructionwhere a notch is provided on the latch 41 and a protrusion is providedon the side end portion 26 of the front guard 20 for engagement with thenotch on the latch 41.

Referring to FIG. 5, the spring 43 can be disposed between the seatportion 10 and the latch 41. The spring 43 can apply a biasing actionthat urges the latch 41 to engage with the front guard 20 for lockingthe front guard 20 in the unfolded position. While the front guard 20 isunlocked and rotates relative to the seat portion 10, the biasing actionapplied by the spring 43 on the latch 41 can cause the protrusion 411 ofthe latch 41 to remain in sliding contact with the peripheral edge 22 ofthe front guard 20. According to an example of construction, the spring43 may be a torsion spring that is disposed around the pivot axis L3 ofthe latch 41 and has two opposite ends respectively connected with thelatch 41 and the sidewall 11 of the seat portion 10.

Referring to FIGS. 1-5, the linking part 42 can be respectively coupledto the backrest frame 30 and the latch 41. More specifically, thelinking part 42 can be movably coupled to the backrest frame 30 so thata rotation of the backrest frame 30 from a deployed position toward thecollapsed position can urge the linking part 42 in movement and actuatethe latch 41 against the biasing action of the spring 43 to disengageand unlock the front guard 20, as shown in FIG. 4a . Folding of thefront guard 20 can be thereby facilitated. For example, a singleoperating step of rotating the backrest frame 30 to the collapsedposition can unlock the front guard 20, and then cause the backrestframe 30 to contact and push the unlocked front guard 20 to rotate inunison in the same direction to its unfolded position.

According to an example of construction, the linking part 42 may becoupled to the backrest frame 30 with a pivotal connection, and coupledto the latch 41 with a sliding and pivotal connection. For example, thelinking part 42 can include a rod portion 42 a and an end portion 42 bconnected with each other, the end portion 42 b bending and projectingat a side of the rod portion 42 a. The linking part 42 comprised of therod portion 42 a and the end portion 42 b may be formed integrally as asingle part. The end portion 42 b of the linking part 42 can bepivotally connected with the side end portion 36 of the backrest frame30 about a pivot axis L4 that extends parallel to and spaced apart fromthe pivot axis L2 of the backrest frame 30 and the pivot axis L3 of thelatch 41. The rod portion 42 a of the linking part 42 can include anelongate slot 421 having two opposite ends 421A and 421B, and the latch41 can have a pin 412 that is disposed through the elongate slot 421.The pin 412 may be disposed in a cavity 413 of the latch 41, and the rodportion 42 a connected with the pin 412 may be at least partiallyreceived in the cavity 413.

Although the illustrated embodiment provides an exemplary constructionfor coupling the latch 41 to the linking part 42, other variantconstructions may be suitable. For example, a variant construction canprovide an elongate slot in the latch 41, and a pin may be fixedlyconnected with the linking part 42 and slidably disposed through theelongate slot to achieve a sliding and pivotal connection between thelatch 41 and the linking part 42.

During adjustment of the backrest frame 30 relative to the seat portion10, the linking part 42 can rotate relative to the backrest frame 30,the latch 41 and the linking part 42 can slide and rotate relative toeach other. For example, when the backrest frame 30 rotates in a firstdirection from a deployed position toward the collapsed position, thelinking part 42 can move along with the backrest frame 30 through thecavity 413 in a direction that reduces a distance between the pin 412and the end 421A of the elongate slot 421 and increases a distancebetween the pin 412 and the other end 421B of the elongate slot 421.Conversely, when the backrest frame 30 rotates in a second directionopposite to the first direction (e.g., from the collapsed positiontoward a deployed position), the linking part 42 can move along with thebackrest frame 30 through the cavity 413 in another direction thatincreases the distance between the pin 412 and the end 421A of theelongate slot 421 and reduces the distance between the pin 412 and theother end 421B of the elongate slot 421.

Because the front guard 20 may need to be kept in the unfolded positionfor use in any deployed position of the backrest frame 30, it may bedesirable that the front guard 20 remains locked during adjustment ofthe backrest frame 30 between the deployed positions. According to anexample of construction, the course of the pin 412 along the elongateslot 421 is configured to provide a range of travel for the linking part42 that does not drive the latch 41 to move and unlock, which allowsadjustment of the backrest frame 30 between the deployed positions whilemaintaining the front guard 20 in a locked state. As the backrest frame30 rotates past the second deployed position shown in FIG. 2 andadvances toward the collapsed position, the linking part 42 may moveoutside the aforementioned range of travel and urge the latch 41 torotate and disengage from the front guard 20. More specifically, thelinking part 42 moving along with the backrest frame 30 can cause theend 421A of the elongate slot 421 to contact with the pin 412 of thelatch 41, and then urge the latch 41 to rotate for disengaging from theside end portion 26 of the front guard 20. The contact between the end421A of the elongate slot 421 and the pin 412 of the latch 41 may occurwhen the backrest frame 30 rotating toward the collapsed positiontravels past an intermediate position between the second deployedposition and the unfolded position of the front guard 20.

Accordingly, the folding mechanism 40 can keep the front guard 20 lockedin the unfolded position for use while the backrest frame 30 is in thedeployed positions or any intermediate position between the deployedpositions, and can operate to unlock the front guard 20 only after thebackrest frame 30 moves past the second deployed position of FIG. 2toward the collapsed position.

Referring to FIGS. 2-5, the folding mechanism 40 can further include aspring 44 operable to bias the front guard 20 toward the unfoldedposition. Once the front guard 20 is unlocked, the biasing actionapplied by the spring 44 may facilitate movement of the unlocked frontguard 20 from the folded position to the unfolded position. According toan example of construction, the spring 44 may be an extension springthat is disposed inside the sidewall 11 of the seat portion 10 and hastwo ends respectively connected with one side portion of the front guard20 and the sidewall 11 of the seat portion 10.

Exemplary operation of the child seat 100 is described hereinafter withreference to FIGS. 1-5. Suppose that the child seat 100 is to beswitched from a configuration where the backrest frame 30 is in thefirst deployed position and the front guard 20 is locked in the unfoldedstate as shown in FIG. 3 to another configuration where the backrestframe 30 is in the collapsed position and the front guard 20 in thefolded position as shown in FIG. 4b . A caregiver can rotate thebackrest frame 30 about the pivot axis L2 toward the front of the seatportion 10. As a result, the backrest frame 30 first rotates in a firstdirection from the first deployed position of FIG. 3 to the seconddeployed position of FIG. 2, which results in a relative movementbetween the linking part 42 and the latch 41 and causes a displacementof the pin 412 along the elongate slot 421 that reduces the distancebetween the pin 412 and the end 421A of the elongate slot 421 andincreases the distance between the pin 412 and the other end 421B of theelongate slot 421. This relative movement between the linking part 42and the latch 41 does not actuate the latch 41, which can remain engagedwith the side end portion 26 to lock the front guard 20 in the unfoldedposition.

As the backrest frame 30 travels past the second deployed position andcontinues rotating in the first direction toward the collapsed state,the linking part 42 moving along with the backrest frame 30 can urge thelatch 41 to rotate against the biasing action of the spring 43 fordisengaging and unlocking the front guard 20 via a contact between theend 421A of the elongate slot 421 and the pin 412 of the latch 41. FIG.4a illustrates the front guard 20 in an unlocked state while thebackrest frame 30 is between the collapsed position and the seconddeployed position. The unlocked front guard 20 then can be rotatedagainst the biasing action of the spring 44 from the unfolded positionto the folded position, e.g., under a pushing action exerted by thebackrest frame 30 on the front guard 20 as the backrest frame 30continues to rotate toward the collapsed position. The front guard 20and the backrest frame 30 can be thereby conveniently collapsed to thefront of the seat portion 10 as shown in FIG. 4b , the front guard 20remaining unlocked in the folded position. In the fully collapsedconfiguration of FIG. 4b , the pivot axes L1, L3, L2 and L4 can besequentially arranged in that order along a lengthwise direction from afront to a rear of the seat portion 10.

When the child seat 100 is to be switched from the configuration of FIG.4b to the configuration of FIG. 2, a caregiver can rotate the backrestframe 30 about the pivot axis L2 in a second direction opposite to thefirst direction toward the rear of the seat portion 10. While thebackrest frame 30 rotates in the second direction from the collapsedposition toward the second deployed position of FIG. 2, the front guard20 can be rotated to the unfolded position. The biasing action appliedby the spring 44 can assist in rotating the front guard 20 to theunfolded position. Once the front guard 20 reaches the unfoldedposition, the spring 43 can urge the latch 41 to engage and lock thefront guard 20 in position.

In case the backrest frame 30 is adjusted rearward from the seconddeployed position of FIG. 2 to the first deployed position of FIG. 3,the linking part 42 can move relative to the latch 41 in a directionthat increases the distance between the pin 412 and the end 421A of theelongate slot 421 and reduces the distance between the pin 412 and theother end 421B of the elongate slot 421, and the latch 41 can remainengaged with the front guard 20. The pin 412 may be exemplary positionedadjacent to the end 421B of the elongate slot 421 once the backrestframe 30 reaches the first deployed position. In the configuration ofFIG. 3, the pivot axes L1, L3, L4 and L2 can be sequentially arranged inthat order along a lengthwise direction from a front to a rear of theseat portion 10.

Referring to FIGS. 2-5, according to an example of construction, the endportion 42 b of the linking part 42 can have an edge 422, and the sideend portion 36 of the backrest frame 30 can have a limiting edge 31 thatis adjacent to the edge 422 of the end portion 42 b. The edge 422 of theend portion 42 b may be a convex edge having a curved shape, and mayface oppositely away from the rod portion 42 b. The limiting edge 31 canbe a concave edge having a curved shape. During rotation of the backrestframe 30 relative to the seat portion 10, the limiting edge 31 of thebackrest frame 30 can remain adjacent to the edge 422 of the end portion42 b. For example, the edge 422 of the end portion 42 b may be adjacentwithout contacting or in sliding contact with the limiting edge 31 ofthe backrest frame 30 during adjustment of the backrest frame 30 betweenthe deployed positions. The limiting edge 31 may prevent an undesirabledisplacement of the linking part 42 that is not induced by a rotation ofthe backrest frame 30, e.g., while the backrest frame 30 is held in anyof the deployed positions. The linking part 42 can be therebyrestrictedly positioned to prevent accidental unlocking of the latch 41when the backrest frame 30 is adjusted to any of the deployed positions,which can assist in keeping the front guard 20 locked in the unfoldedposition.

In the aforementioned embodiment, the front guard 20 can be locked inthe unfolded position with the latch 41 and unlocked by rotating thebackrest frame 30 toward the collapsed position. According to a variantembodiment, the placement of the latch 41 and the linking part 42 may beinterchanged so that the backrest frame 30 may be locked in a deployedposition with the latch 41 and unlocked by rotating the front guard 20toward the folded position. In this variant embodiment, the latch 41 canrotate to engage and disengage the side end portion 36 of the backrestframe 30 for locking and unlocking the backrest frame 30, and thelinking part 42 may be respectively coupled to the front guard 20 with apivotal connection and to the latch 41 with a sliding and pivotalconnection like previously described. The linking part 42 can be therebymovably coupled to the front guard 20 so that a rotation of the frontguard 20 from the unfolded position toward the folded position can urgethe linking part 42 in movement and actuate the latch 41 to disengageand unlock the backrest frame 30 for its convenient collapsing towardthe front of the seat portion 10.

According to another variant construction, the latch 41 may be slidablyconnected with the seat portion 10 so as to be movable for engaging oneof the front guard 20 and the backrest frame 30, and the linking part 42may be a flexible element (such as a cable or a cord) respectivelyconnected with the latch 41 and the other one of the front guard 20 andthe backrest frame 30. As the element (i.e., either the front guard 20or the backrest frame 30) coupled to the flexible element rotates in thefolding direction, the flexible element can pull and actuate the latch41 to disengage and unlock the other one of the front guard 20 and thebackrest frame 30.

Advantages of the structures described herein include the ability toconveniently fold a backrest frame and a front guard of a child seat.The child seat can have a latch and a linking part connected with eachother, the latch being operable to lock one of the backrest frame andthe front guard in position, and the other one of the backrest frame andthe front guard being movable to drive the latch to unlock for foldingof the backrest frame and the front guard. In particular, an embodimentmay have the latch operable to lock the front guard, and the linkingpart may be coupled to the latch and the backrest frame so that arotation of the backrest frame toward the collapsed position can actuatethe latch to disengage and unlock the front guard. As a result, thebackrest frame and the front guard can be folded with a reduced numberof operating steps.

Realization of the child seat has been described in the context ofparticular embodiments. These embodiments are meant to be illustrativeand not limiting. Many variations, modifications, additions, andimprovements are possible. These and other variations, modifications,additions, and improvements may fall within the scope of the inventionsas defined in the claims that follow.

What is claimed is:
 1. A child seat comprising: a seat portion; abackrest frame and a front guard respectively connected pivotally withthe seat portion; a latch connected with the seat portion, the latchbeing operable to lock the front guard in position, wherein the latch isengaged with the front guard for locking the front guard and disengagedfrom the front guard for unlocking the front guard; and a linking partrespectively coupled to the latch and the backrest frame, the backrestframe being rotatable to cause the latch to unlock for rotation of thefront guard.
 2. The child seat according to claim 1, wherein the seatportion has two sidewalls respectively provided at a left and a rightside, and the front guard transversally extends above the seat portionwith two side end portions of the front guard respectively connectedpivotally with the two sidewalls of the seat portion.
 3. The child seataccording to claim 1, wherein the front guard is rotatable relative tothe seat portion between an unfolded position and a folded position, thelatch being engaged with the front guard to lock the front guard in theunfolded position.
 4. The child seat according to claim 3, furtherincluding a spring connected with the front guard, the spring biasingthe front guard toward the unfolded position.
 5. The child seataccording to claim 1, wherein the backrest frame is adjustable relativeto the seat portion between a plurality of angular positions including acollapsed position, a first deployed position, and a second deployedposition between the first deployed position and the collapsed position.6. The child seat according to claim 5, wherein the front guard remainslocked in position by the latch during adjustment of the backrest framebetween the first and second deployed positions, and the latch is urgedto disengage and unlock the front guard when the backrest frame rotatespast the second deployed position and advances toward the collapsedposition.
 7. The child seat according to claim 1, wherein the latch ispivotally connected with the seat portion, and the linking part iscoupled to the backrest frame with a pivotal connection.
 8. The childseat according to claim 7, wherein the linking part is coupled to thelatch with a sliding and pivotal connection.
 9. The child seat accordingto claim 8, wherein one of the linking part and the latch includes anelongate slot, and the other one of the linking part and the latch has apin disposed through the elongate slot, a course of the pin along theelongate slot is configured to provide a range of travel for the linkingpart that does not cause the latch to unlock the front guard.
 10. Thechild seat according to claim 9, wherein the linking part is movable tourge the latch to disengage from the front guard via a contact betweenthe pin and one end of the elongate slot.
 11. The child seat accordingto claim 10, wherein the front guard has an unfolded position and afolded position, the backrest frame is adjustable relative to the seatportion between a plurality of angular positions including a collapsedposition, a first deployed position, and a second deployed positionbetween the first deployed position and the collapsed position, and thecontact between the end of the elongate slot and the pin of the latchoccurs when the backrest frame rotating toward the collapsed positiontravels past an intermediate position between the second deployedposition and the unfolded position of the front guard.
 12. The childseat according to claim 7, wherein the linking part has an end portionpivotally connected with a side end portion of the backrest frame, theside end portion of the backrest frame having a limiting edge adjacentto the end portion of the linking part, the limiting edge preventing anundesirable displacement of the linking part that is not induced by arotation of the backrest frame.
 13. The child seat according to claim12, wherein the limiting edge has a curved shape.
 14. The child seataccording to claim 1, further including a spring connected with thelatch, the spring biasing the latch to engage with the front guard. 15.The child seat according to claim 1, wherein the seat portion has aconnector operable to detachably engage with a corresponding structureprovided on a standing frame of a child supporting apparatus.
 16. Achild seat comprising: a seat portion; a backrest frame and a frontguard respectively connected pivotally with the seat portion; a latchconnected with the seat portion, the latch being operable to lock one ofthe backrest frame and the front guard in position; and a linking partrespectively coupled to the latch and the other one of the backrestframe and the front guard, the other one of the backrest frame and thefront guard being rotatable to cause the latch to unlock.
 17. The childseat according to claim 16, wherein the seat portion has two sidewallsrespectively provided at a left and a right side, and the front guardtransversally extends above the seat portion with two side end portionsof the front guard respectively connected pivotally with the twosidewalls of the seat portion.
 18. The child seat according to claim 16,wherein the backrest frame and the front guard are foldable toward afront of the seat portion.
 19. The child seat according to claim 16,wherein one of the linking part and the latch includes an elongate slot,and the other one of the linking part and the latch has a pin disposedthrough the elongate slot, a course of the pin along the elongate slotis configured to provide a range of travel for the linking part thatdoes not cause the latch to unlock.
 20. The child seat according toclaim 19, wherein the linking part is movable to urge the latch todisengage from the front guard via a contact between the pin and one endof the elongate slot.